Implement the Nodes icons panel addon icons into the icon sheet

Nodes icons panel addon - The external icons loads eons. All 156 icons needs around 20-30 seconds here at my pc to be loaded. And this AFTER you have clicked the tab. Not at startup. Inacceptable. We are in the lucky situation that we can implement the icons directly into the iconsheet. Which loads the icons in an eyeblink then.

Task: implement the 156 icons from the addon into the Bforartists icon sheet.